Keyboard



FIG. 1 is a perspective view of a keyboard showing my design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a bottom plan view thereof.

FIG. 5 is a top plan view thereof.

FIG. 6 is a left-side elevational view thereof.

FIG. 7 is a right-side elevational view thereof; and,

FIG. 8 is an enlarged view of circled portion A of the keyboard of FIG. 2.

The broken lines in the drawings illustrate portions of a keyboard which form no part of the claimed design. 

CLAIM The ornamental design for a keyboard, as shown and described. 